The effect of chloride fertilization on blackspot susceptibility and other quality characteristics and on yield of potato |
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Authors: | C D Van Loon W Van Den Berg |
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Institution: | (1) Oostrandpark 103, 8212 AT Lelystad, the Netherlands;(2) PPO-Lelystad, P.O.Box 430, 8200 AK Lelystad, the Netherlands |
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Abstract: | Summary Trials were carried out in two years on a sandy loam and on a heavy clay soil with two cultivars to examine the potential
of chloride fertilization as a tool to reduce blackspot susceptibility of potatoes and to investigate other effects on yield
and quality. Blackspot susceptibility was significantly reduced in cv. Marijke, but not in cv. Bintje as a result of increasing
doses of applied chloride from 0 to 400 kg ha1. Dry matter concentration, assessed as under-water weight, was reduced by chloride
in both cultivars at the two locations. Fry colour of French fries was improved by chloride.
Applying 400 kg ha−1 Cl− to both soil types decreased net tuber yield >35 mm of cv. Bintje but not of cv. Marijke. Chloride caused slower emergence,
retarded crop development and less stems per plant on the sandy loam soil but not on the heavy clay soil. |
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Keywords: | Solarium tuberosum L dry matter concentration fry colour |
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